A tower of colorful sheep. Credits to Megrafa.
Note: Minify the command to avoid issues :)
Spellbook Part II (v.5.0)
Ender Dragon X100
HyperCube
Platinum Pickaxe
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)